|

Vectors

New kid on the Block

 Joined: 20 Nov 2009 Post: 1
20 Nov 2009 12:25:12 IST
0 People liked this
3
4665
what is the diffrence between parallel vector and collinear vector?
Engineering Entrance , JEE Main , JEE Advanced , Mathematics , Vectors

what is the diffrence between parallel vector and collinear vector?

Forum Expert
Joined: 19 Oct 2006
Posts: 7797
20 Nov 2009 13:20:40 IST
0 people liked this

2 points are said to be colinear if they lie on the same line.
---A---->----B---> Here in this diagram, points A and B lie on the same line and hence are colinear. Thus when 2 vectors act along the same line, then they are said to be colinear.

When 2 vectors act along the same line but have a seperation between them, they are said to be Parallel. i.e Parallel vectors have the same phase, but different magnitudes. That is why when 2 vectors A and B are parallel, then, A=kB, where, K is a constant.

--------A---------> Here A and B are parallel.
----------B--------->

Note: Colinear Vectors are also Parallel vectors except that they lie on the same line.

Mathematically speaking, when 2 vectors are parallel, the dot product of the vectors are 1 and their cross product is zero.(As angle between them is zero)

2 vectors are said to be Co planar if they act in the same plane but they have diferent/same magnitudes and phases.

New kid on the Block

Joined: 19 May 2012
Posts: 2
19 May 2012 13:37:58 IST
0 people liked this

different to paralal,colinear vectors

New kid on the Block

Joined: 19 May 2012
Posts: 2
19 May 2012 13:59:36 IST
0 people liked this

determine the A and B sothat the folllowing vectors are colinear. -3i+4j+Bk, Ai+8j+6k

 Some HTML allowed. Keep your comments above the belt or risk having them deleted. Signup for a avatar to have your pictures show up by your comment If Members see a thread that violates the Posting Rules, bring it to the attention of the Moderator Team

## For Quick Info

Name

Mobile

E-mail

City

Class

Vertical Limit

Top Contributors
All Time This Month Last Week
1. Bipin Dubey
 Altitude - 16545 m Post - 7958
2. Himanshu
 Altitude - 10925 m Post - 3836
3. Hari Shankar
 Altitude - 9960 m Post - 2185
4. edison
 Altitude - 10815 m Post - 7797
5. Sagar Saxena
 Altitude - 8625 m Post - 8064
 Altitude - 6330 m Post - 1979

Physics

Topics

Mathematics

Chemistry

Biology

Institutes

Parents Corner

Board

Fun Zone